package com.lagou.boot;

import com.lagou.handler.UserServiceHandler;
import com.lagou.pojo.RpcRequest;
import com.lagou.serializer.impl.JSONSerializer;
import com.lagou.utils.RpcDecoder;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringEncoder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;

/**
 * @author czq
 * @date 2020/8/10 19:43
 */
@Component
public class ServerBoot implements CommandLineRunner {

    @Autowired
    private UserServiceHandler userServiceHandler;

    @Override
    public void run(String... args) throws Exception {
        startServer("127.0.0.1", 8999);
    }

    /**
     * 创建一个方法启动服务器
     */
    private void startServer(String ip, int port) throws InterruptedException {

        // 1、创建两个线程池对象
        NioEventLoopGroup boosGroup = new NioEventLoopGroup();
        NioEventLoopGroup workGroup = new NioEventLoopGroup();

        // 2、创建服务端的启动引导对象
        ServerBootstrap serverBootstrap = new ServerBootstrap();

        // 3、配置启动引导对象
        serverBootstrap.group(boosGroup, workGroup)
                // 设置通道为 Nio
                .channel(NioServerSocketChannel.class)
                // 创建监听 channel
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
                        // 获取管道对象
                        ChannelPipeline pipeline = nioSocketChannel.pipeline();
                        // 给管道对象 pipeline 设置编码
                        pipeline.addLast(new StringEncoder());
                        pipeline.addLast(new RpcDecoder(RpcRequest.class, new JSONSerializer()));
                        // 把我们自定的一个 ChannelHandler 添加到通道中
                        pipeline.addLast(userServiceHandler);
                    }
                });

        // 4、绑定端口
        serverBootstrap.bind(ip, port).sync();

        System.out.println("服务启动成功");
    }
}
